Enables docked windows by default

ash/wm/toplevel_window_event_handler_unittest.cc

Index: ash/wm/toplevel_window_event_handler_unittest.cc
diff --git a/ash/wm/toplevel_window_event_handler_unittest.cc b/ash/wm/toplevel_window_event_handler_unittest.cc
index 99e7418bb9dfb30430a3a50b28146bb533114515..81972ae3a7649df7131252b90b1d85547ad9d0a8 100644
--- a/ash/wm/toplevel_window_event_handler_unittest.cc
+++ b/ash/wm/toplevel_window_event_handler_unittest.cc
@@ -405,6 +405,10 @@ TEST_F(ToplevelWindowEventHandlerTest, GestureDrag) {
     EXPECT_EQ(snapped_bounds.ToString(), target->bounds().ToString());
   }
 
+  // Resetting the bounds avoids a situation when the initial drag before
+  // the fling results in target getting stuck at the edge and fling
+  // incrementing the snapping sequence against our assumptions.
+  target->SetBounds(gfx::Rect(700, 0, 100, 100));

[flackr, 2013/11/06 20:02:31]

I'm not sure I follow why enabling docking necessitates this.

[varkha, 2013/11/06 21:19:53]

This was also due to sticky behavior being enabled. I think this could be a good
change to avoid flakiness in future, but you are correct, it is not directly
related to docking. Removed for now.

   old_bounds = target->bounds();
 
   // Snap left.